This month, the U.S. Space & Rocket Center received a Certificate of Excellence award from TripAdvisor for the second straight year.

TripAdvisor, which recognizes establishments and businesses with consistently positive traveler reviews on its website, uses a proprietary algorithm that looks at reviews and ratings of the award winners.

Businesses must maintain a TripAdvisor rating of at least four out of five and have a large number of recent customer reviews. An establishment's tenure and popularity ranking on the website are also taken into account.

"This award reflects the pride and passion I see in the Center's employees every day," said Deborah Barnhart, chief executive and executive director of the USSRC, in a statement. "This is a well-deserved recognition of the work they are doing to ensure visitors to the U.S. Space & Rocket Center have the experience of a lifetime every time they visit."